Electrically-controlled heater



' C. E. PATTERSON. I

ELECTRICALLY CONTROLLED HEATER.

APPLICATION FILED NOV. 17. I920.

.PatentedJline 6,1922.

I2 SHEETS-SHEET 1.

I r/vvswrol? ,E. Pattcrson,

mamas C. E. PATTERSON.- I ELECTRICALLY CONTROLLED HEATER- APPLICATION FILED Nov. I1 I920.

Patentd'lune 6, 1922.

lm mfan a 6'. WITNESSES v v g7 r-1&5 EPa ttenson,

Br Q

rm/mm? object to providea heater of the character- UNITED STATES PATENT OFFICE.

CHARLES Enwm'rarrrnason, or SAN rnanorsoo, CALIFORNIA.

ELECTRICALLY-GONTROLLED HEATER.

To all whom it may concern.

CHARLES E. PATTER- San Francisco and State of California, have invented certain new and useful Improvements in Electrically-Controlled Heaters, of which the following is a specification.

My invention is' an improvement in electrically controlled heaters, and has for its specified, wherein the heating element is so supported and mounted that the radiated heat rays may be reflected either directly forward, or in the form" of a cone, and

\ wherein'meansis provided in connection with the support for insuring a free and un-' vrestrlcied flow of air about the heater. I

In the drawings: Figure 1 1s a side view of the improved heater proper,

"F1gure'31s'a front view,

Figure 4C is an enlarged 'dtitll section through the casing and reflector,

Q tion,"the improved heater comprises a bowl-' r i conical support 8, and this support has" its Figure 5 is an enlarged detail at the rim:

of the casing, Figure 6 is Figure 2, r

Figure 7 is a detail section at the adjustingscrew. A i V In the present embodiment'of the invena section on the line 6 6 of shapedjcasing or shell 1, which is provided atits periphery with a flattened portion 2,.

that .is, with aring which is oo-axial with the axis-of the shell, the body of the shell being the segment of a sphere. At the center of the shell there is secured a lug 3, the said lug having laterally extending flanges 4L whichare riveted to the shell, and means is provided in connection with the lug for permitting the shell to be connected to a standard to be described. 7

The free edge'of the ring portion 2 of the shell is headed as shown at 5, and upon this portion there ismounted to move a deflecting'ring 6', the said ring having its rear or inneredge beaded as shown at 7 to engage; the bead 5, to limit the outward movement of the ring 6 with respect to the portion 2 of the'shell. Theforward edge ofthering 6 is also'beaded,as shown. v

' Within the shell 1 there is arranged a Specification of Letters latent. Patented 11113 6 1922,

Applicationfiled November 17,1920. Serial No. 424,642.

free edge lapped upon the head 5 of the portion 2 of the shell. As shown more particularly in Figure 5, the free edge of the support'S is curved to fit the bead, and

bolts and nuts indicated at 9 are provided to the center of the support 8, by means of the mechanism shown in Figure 2. Thesaid mechan1sm comprises a socket 11 which'has a stem passed through the center of the support 8 and engaged by a nut 12-and a screw 13 which is passed through the small end of the element 10 and has threaded engagement with the socket.

A resistance wire 14 is passed spirally about the element 10, extending from the large end to the small end, and the terminals of-the wire 'are 'connected with contact buttons 15 on an insulated-block 16 which is bolted to the support 8, as indicated at 17 Withthe contact'buttons 15 the wires of a conducting cable 18 are connect ed, the said wires passing through an insulated-sleeve 19 in the shell.

The heatingflelement 10 is braced against.

the support 8, by means of rods 20. Each of these rods has one end reduced and passed through the support, and headed on therear face thereof. The forward end of each of the rodsis beveled to fit against the peripheral surface of the heating element. As shown in Figure 3, three of the rods are provided, the said rods being spaced atan gular intervals of 120.

Between the heating element and the support 8 there is arranged a frusto-conical reflector; indicated at 21. The saidjreflector is connected to the support 8 at intervals by means of rivets 22. These rivets are of a length such that a spacing sleeve 23 may bearranged on each rivet between the reflector and the support, and the reflector is thus held in spaced relation with respect to the support. i

Between the rivets 22 the reflector iscorrugated as shown at21 the corrugations being of considerable depth as shown, and each corrugation gradually increases in cross sectional area from the closed end of the reflector indicated at 24: to the open end.

In the present instance, six rivets 22 are provided, the said rivets supporting the reflector in spaced relation with respect to the support 8, and with respect to the heating element 10. Thus when the heating element is heated, air may flow inwardly between the support 8 and the reflector and outwardly between the heating element and the reflector or in the opposite direction, the heated air passing outwardly and the cold air passing inwardly to be heated.

hen the ring 6 is in the position of Figure 2, the heat rays will be reflected ontwardly in a conical formation. lVhen however, the ring 6 is pushed outwardly until the head 7 engages the head 5, the heat rays will be reflected in a cylindrical formation directly forward. A fender and guard 25 of perforate material, as for instance woven wire, is arranged at the open end of the shell, the said guard being the segment of a sphere of greater radius than the radius of the shell.

The shell is connected to a suitable stand by means of the lug 3. In Figure 1 there is shown a stand consisting of upper and lower telescoping sections 26 and .27, the latter sections having a suitable base 28. i

The section 27 is hollow, and the section.

26 slides in the section 27, and. is held in adjusted position by means of a set screw 29 which. is threaded through the section 27. The lug 3 laps upon the flattened upper end of the section 26, and a set screw 30 is threaded through the lug and through the flattened portion of the section to clamp the parts together.

I claim:

1. An electrically controlled heater, comprising a bowl-shaped shell having at its free or ge a marginal ring, a heater and reflector supported within the shell and. a deflecting ring mounted to slide on the marginal ring of the shell, to move beyond the free edge of the marginal ring or back into register with said ring, said heater comprising a frusto-conical hollow shell arranged with its large end outward and carrying a heating element, a conical support for supporting the heater and reflector within the shell and arranged with its large end outward and having said large end secured to the marginal ring of the shell, the reflector being arranged between the support and the heater shell and spaced apart from both, said reflector being corrugated, and the depth and width of the corrugations gradually increasing from within outward.

2. An electrically controlled heater, comprising a bowlshaped shell having at its free edge a marginal ring, a heater and reflector supported within the shell and a defleeting ring mounted to slide on the marginal ring of the shell, to move-beyond the free edge of the marginal ring or back into register with said ring, said heater comprising a frusto-conical hollow shell arranged with its large end outward and carrying a heating element, a conical. support for sn] porting the heater and reflector within the shell and arranged with its large end outward and having said large end secured to the marginal ring of the shell, the reflector being arranged between the support and the heater shell andspaced apart from both, said reflector being corrugated.

3. An electrically controlled heater, comprising a bowl-shaped shell having at its free edge a marginal ring, a heater and reflector supported within the shall and a deflecting ring mounted to slide on the margina-l ring of the shell, to move beyond the free edge of the marginal ring or back into register with said ring, said heater comprising a frusto-conical hollow shell arranged with its large end outwardly and carrying a heating element, a conical support for supporting the heater and reflector within the shell and arranged with its large end.

outward and having said large end secured to the marginal ring of the shell, the reflector being arranged between the support and. the heater shell and spaced apart from both.

41-. An electrically controlled heater, comprising a bowl-shaped shell. having at its free edge a marginal ring, a heater and reflector supported within the shell and a deflecting ring mounted to slide on the marginal ring of the shell, to move beyond the free edge of the marginal ring or back into register with said ring, said heater comprising a frusto conical. hollow shell arranged with its large end outward and. carrying a heating element, the reflector beingspaced apart from the first named shell. and from the heating shell 5. An electrically controlled heater, comprising a bowl-shaped shell having-at its free edge a marginal ring, a heater and reflector supported within the shell and a deflecting ring mounted to slide on the marginal ring of the shell, to move beyond the free edge of the marginal ring or back into re ister with said ring, said heater comprising a frusto-conical shell arranged with its large end outward and having a heating element, the reflector encircling the heater shell and being spaced apart therefrom.

6. An electrically controlled heater, comprising a bowl-shaped shell having at its free edge a marginal ring, a heater and re flector supported. within the shell and a deflecting ring mounted to "slide on the marginal ring of the shell, to move beyond the free edge of the marginal ring or back into register with said ring.

7. An electric heater comprising a casing, a reflector within the casing, a heating element within the reflector, said reflector being of conical form to direct the rays emanating from the element conically from the heater,

and a ring carried upon the peripheral edge of the casing and movable inwardly and out .wardly to occupy a position wherein the rays passing from the reflector are directed forward 1n the form of a cylinder.

8. An electric heater comprising a frusto conical reflector having corrugations "formed there1n which gradually increase 1n cross sectional area from the closed end of the reflector to the open end thereof,-a frustoconical body supported concentrically within the reflector, and a heatingelement coiled about the body.

9. An electric heater comprising a conical support, a reflector of frusto-conical form arranged concentrically of the support and in spaced relation thereto to allow the circulation of air between the support and reflector, a frusto-conical body arranged concentrically within the reflector, and a heating element coiled about the body.

10. An electric heater comprising a conical support, a conical reflector substantially concentrically with the support and arranged in spaced relation thereto to permit ofthe circulation of air between'the two, said reflector being corrugated radially with each corrugation gradually increasing in cross sectional area from the closed end to the open end of the reflector, and 'aheating element within the reflector. I

11. An electric heater comprising a conical support, a conical reflector substantially con centrically with the support and arranged in spaced relation thereto 'to permit of the circulation of air between the two, said reflector being corrugated radially with each corrugation gradually increasing in cross sectional area from the closed end to the open end of the reflector, and aheating ele- Inent arranged in the form oi: a cone and concentrically within the reflector.

a reflector within the casing, a heating element within the reflector, said reflector being of conical form to direct the rays emanating from the element conically from the heater,

andmeans carried by the. casing movable to occupy a position wherein the rays passing from the reflector are directed forwardly in the form of a cylinder.

14;. A reflector for electric heaters having a conical form and formed with radially extending corrugations, each of the corruga tions gradually increasing in cross sectional area from the closed end of the reflector to the open end thereof.

CHARLES EDWIN PATTERSON. 

